HtibiNekem nincs baja a /mnt-s csatolással. Mondjuk nem is direkt a /mnt-be csatolok, hanem almappába (/mnt/Deepin, [/mnt/Ubuntu], /mnt/Windows). Talán egy kis támaszt nyújt az fstab-em tartalma:
# /etc/fstab: static file system information.
#
#
#
# Entry of root partition on /dev/sda8
#
/dev/sda8 / ext4 rw,relatime,data=ordered 0 1
#
#Entry for EFI partition :
UUID=DCEF-CB22 /boot/efi vfat
#
rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=utf8,shortname=mixed,errors=remount-ro 0 2
#
# Entry for Ubuntu 16.04 LTS on /dev/sda6 :
UUID=e0e36219-0a57-42d3-925d-d555ba91749c /mnt/Ubuntu ext4 defaults,users,auto,x-gvfs-show,x-gvfs-name=Ubuntu%2016.04%20LTS 0 0
#
# Entry for Windows 8.1 on /dev/sda4 :
# UUID=A2C8C75BC8C72BFB /mnt/Windows ntfs-3g defaults,nosuid,nodev,locale=hu_HU.UTF-8 0 0
#
# Entry for SWAP on /dev/sda7
/dev/sda7 none swap defaults 0 0
#
# Entry for Samba share 'Torrent' on host 192.168.1.1
//192.168.1.1/torrent /media/savanweylyn/Torrent cifs credentials=/home/savanweylyn/.smbcredentials,defaults 0 0
#
# Entry for TOSHIBA TransMemory USB 2.0 flash drive
UUID=8EFA-B306 /media/savanweylyn/TOSHIBA exfat noauto,rw,defaults,users,x-gvfs-show,x-gvfs-name=TOSHIBA%20TransMemory 0 0
#
# WD Elements External USB 3.0 HDD
UUID=E82642C62642958A /media/savanweylyn/WD_Elements/ ntfs noauto,rw,defaults,x-gvfs-show,x-gvfs-name=WD%20Elements
sda7 után mindent saját kezűleg írtam be némi internetes ill. baráti segítség után